I just stumbled upon one thing.It seems you are using autoplay for the most time. But in the 'level'-layouts (like in playtest) you are additionally using a positioned sound, that you are forcing to play on channel 2 without reserving channel 2 (at least I couldn't find that action)Wherever you load on a fixed channel, like this example from your cap:

tulamide, thank you very much!! The problems was with "Sound Attachments". But when game runned whithout sounds shes don't crashes. I deleted the sounds attachments and now bug disappeared. Now I try to test the game at friends.